From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DB18C352A9 for ; Thu, 26 Sep 2019 17:57:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED37A222CC for ; Thu, 26 Sep 2019 17:57:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Ki0F6+sL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728306AbfIZR5B (ORCPT ); Thu, 26 Sep 2019 13:57:01 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:34128 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728152AbfIZR4b (ORCPT ); Thu, 26 Sep 2019 13:56:31 -0400 Received: by mail-pf1-f193.google.com with SMTP id b128so2280611pfa.1 for ; Thu, 26 Sep 2019 10:56:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lY3gLtq1yv4TCNLsCOhid7qXT7bvA83WxioIIIqFVXA=; b=Ki0F6+sLs6VORroy0ffqnJseBA7QSYUqd1wFP0NbS4cak1Wh3YkGMRzQvtEEccudzG edctuQ/eEwwU5sHQJ5XfK3VeDlq6muLK9g3jC02FBRdOySPAoLy0gCS9CBjGysbAQtpV XAVWcStOY/x6BsVgnubCCJ1P6LNHIFc/5/2+c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=lY3gLtq1yv4TCNLsCOhid7qXT7bvA83WxioIIIqFVXA=; b=IfQPE7vHvh6gJ1Y5O1Di6K04pPAeDDtcc4lEHm7XY8K7q7MqL8OdFEog511aHLGhTJ SHdG+9iyMzEnzHuH4730CfR1hsF2+u6fdaHvmpWVcnrFNOmqQEq3WLwCZ+kF0M6Vo2j5 Ol6AEcaSr4wBUg9UV8agwYt27zWyJgIyhW0R2PFfF/JSMI8o8GPoygU2ygo0dJEEl+ZS Z4KRw1IrjhWkArMmAHW4xvLz5pPbjz+Sh/lLVvtrl3srpejDK3I0/2mUe9GmdOR37LxD aVhfnM/UGBlqsFeZ1ard7v2fNXs6mix2D+YLa89EbR9ohjRhjetP5yKMuhy5yBpNTJDh 4Hyw== X-Gm-Message-State: APjAAAXLsjmO8U3Fr03vy0bg/wh8xQd/XnftpGW0LEIzBivxAZJxvJLC XseATkgpGXceIBywqe0tWF/fIw== X-Google-Smtp-Source: APXvYqzUFG+7+GBGC0jBD0+mR//mqQSm/qKVQf8bQR8gVQHifb6ysRylAOP5049ta8XmpDzMuRucBg== X-Received: by 2002:a65:500d:: with SMTP id f13mr4684873pgo.359.1569520591224; Thu, 26 Sep 2019 10:56:31 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id 8sm2842378pgd.87.2019.09.26.10.56.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2019 10:56:28 -0700 (PDT) From: Kees Cook To: Thomas Gleixner Cc: Kees Cook , Rick Edgecombe , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Dave Hansen , Andy Lutomirski , Arnd Bergmann , linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michal Simek , linux-parisc@vger.kernel.org, linux-xtensa@linux-xtensa.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 25/29] xtensa: Move EXCEPTION_TABLE to RO_DATA segment Date: Thu, 26 Sep 2019 10:55:58 -0700 Message-Id: <20190926175602.33098-26-keescook@chromium.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190926175602.33098-1-keescook@chromium.org> References: <20190926175602.33098-1-keescook@chromium.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The EXCEPTION_TABLE is read-only, so collapse it into RO_DATA. Signed-off-by: Kees Cook --- arch/xtensa/kernel/vmlinux.lds.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index bdbd7c4056c1..7341964722ae 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -14,6 +14,8 @@ * Joe Taylor */ +#define RO_DATA_EXCEPTION_TABLE_ALIGN 16 + #include #include #include @@ -130,7 +132,6 @@ SECTIONS .fixup : { *(.fixup) } - EXCEPTION_TABLE(16) /* Data section */ _sdata = .; -- 2.17.1